NAD CD Player

I am thinking of buying a new seperates system with a NAD C320 amplifier and B&W DM601S3 speakers. Someone suggested to me the Arcam 7SE would sound too warm with the NAD amp so I am looking at a NAD CD player. Either the NAD C521 or the NAD C540.

Would anyone reccommend paying the extra for either the NAD C540 or the 7SE.